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Chapter 5: Q. 98 (page 611)

In the following exercises, solve the systems of equations by substitution.

2x-15y=712x+2y=-4

Short Answer

Expert verified

The ordered pair is(-14,-12)

Step by step solution

01

Step 1. Given Information 

The given equations are

2x-15y=712x+2y=-4

02

Step 2. Calculation

Solve the second equation for variable y.

12x+2y=-42y=-4-12xy=-4-12x2y=-2-6x

Now substitute the obtained value of y in the first equation, we get,

2x-15(-2-6x)=72x+30+90x=792x=-23x=-14

Substitute the value of x to find the value of variable y.

y=-2-6(-14)y=-2+32y=-4+32y=-12

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